MathDB

10

Part of 2005 Miklós Schweitzer

Problems(1)

5 vectors in 3d space

Source: miklos schweitzer 2005 q10

8/13/2021
Given 5 nonzero vectors in three-dimensional Euclidean space, prove that the sum of their pairwise angles is at most 6π6\pi.
vectorangle3D geometrylinear algebra